Ultrafast optical tomography systems using coherence agility.

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Date
2004-07-01
Authors
Riza, Nabeel A.
Arain, Muzammil A.
Yaqoob, Zahid
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Society of Photo-Optical Instrumentation Engineers (SPIE)
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Abstract
Described are three types of optical imaging systems based on source coherence agility. On axis ultrafast microsecond sub-surface imaging is achieved by use of a broadband low coherence optical source to implement fast Doppler time domain optical coherence tomography (OCT). Ibis system is formed as a combination of a fast scan acousto-optically implemented variable optical delay line with a single acousto-optic (AO) Bragg cell optical heterodyne interferometer. A second imaging system is introduced with a no-moving parts probe design and fast microsecond speed optical spatial scanning along one dimension implemented using a fixed wavelength high coherence source with a single Bragg cell AO interferometer. The third design involves realization of a spectral domain OCT system implemented via the use of a tunable laser in the proposed single AO cell heterodyne interferometer.Described are three types of optical imaging systems based on source coherence agility. On axis ultrafast microsecond sub-surface imaging is achieved by use of a broadband low coherence optical source to implement fast Doppler time domain optical coherence tomography (OCT). Ibis system is formed as a combination of a fast scan acousto-optically implemented variable optical delay line with a single acousto-optic (AO) Bragg cell optical heterodyne interferometer. A second imaging system is introduced with a no-moving parts probe design and fast microsecond speed optical spatial scanning along one dimension implemented using a fixed wavelength high coherence source with a single Bragg cell AO interferometer. The third design involves realization of a spectral domain OCT system implemented via the use of a tunable laser in the proposed single AO cell heterodyne interferometer.
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Fiber-optics , Biomedical instruments , High speed , Time domain OCT , Spectral domain OCT , Optical coherence tomography , Bragg cells , Acousto-optics , Biomedical optics , Coherence (optics) , Adaptive optics , Single mode fibers
Citation
Riza, N. A., Arain, M. A. and Yaqoob, Z. (2004) 'Ultrafast optical tomography systems using coherence agility',Proceedings of SPIE, 5316, Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine VIII, Biomedical Optics 2004, San Jose, California, United States. doi: 10.1117/12.529096
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© 2004 Society of Photo-Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.